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ENVELOPE MACHINE Filed Feb. 26, 1925,

m H, June 289 N24. A. OLGA! @334 ENVELOPE MACHINE Filed Feb. 26, 1925 5 Sheets-Shaw. 4

r VIII I H9: 2 um 28,1921 A. QLGAY 63 ENVELOPE MACHINE File/a1 Feb. 26. 1925 5 sheets shea'h 5' Patented June 28, 19.27 i

hairs rare ear ALBERT OLGAY, 0F GLEN ELLYN, ILLINOIS, ASSIGNOR 'IO GAW-OHARA ENVELOIE 00., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

nNv nLoPE "MACHINE.

Application filed February 26, 1925. Serial No. 11,656.

This invention pertains to machines for the manufacture of window envelopes or the like and has more particular reference to a machine for automatically applying window patches and the like to openings in envelopes for the production of the wellknown window envelopes.

lVindow envelopes have obviated envelope addressing and have facilitated correspondence to a large degree, but their manufacture entails an increased cost. The envelope or envelope blank must necessarily be punched or cut to provide the window opening and the window itself, made of translucent or semi-transparent paper or other material must be applied to the opening with glue or gum to cover 1t. Preferably, this window covering material is applied on the interior face of the envelope or envelope blank so that it may not be easily removed or torn from the envelope to which it is ap plied. Heretofore,manufacture of these envelopes has been accomplished by hand. The envelope blanks and openings therein for the window can, of course, be cut out by machinery, but the very thin translucent win dow covers have been considered too difficult to handle in machines, wherefore they have been applied by an operator who first ginnmed the edges of the opening in the envelope blank or the edges of the window cover to secure the cover to the envelope. With my invention, the window covers are exceptionally easily handled,the gum is applied as desired around the edges of the envelope blank opening and the patch or window cover applied with facility and dispatch. The difficulty and extra expense of hen d application have been completely annihilated and quantity production with quality has been materially increased.

One of the primary objects of my invention is to provide a. machine adapted to automatically apply gum or glue to the edges of a window envelope opening and to there after automatically apply the window cover or window patch.

Another object is to devise a machine adapted to handle the relatively thin patches or covers and to supply them, one at a time, as desired.

A further object is to provide a machine of the character described operable by a.

single person and one which may be controled from single position,

Still further objects of minor as well as maj or in'iportance will become apparent from the description and claims and from the drawing in which:

Fig. l is a front elevation of one form of a machine embodying my invention,

F 2 is an elevation of the left hand side of the machine shown in Fig. 1,

Fig. is a top plan view,

Fig. t is an enlarged view of the mechanism shown in Fig. 2 showing the gumming pad contacting with the topmost envelope blank to apply gum thereto,

Fig. 5 is a view similar to that of Fig. at showing the gumming pad retracted and the patch or window cover applying mechanism in the act of applying a patch to the envelope blank,

Fig. 6 is also a view similar to that of Fig. i gum from the gum applying idling roll,

Fig. 7 is a sectional elevation of the patch or window cover magazine,

.Fig. 8 is a sectional elevation of the gum reservoir and gumming rolls,

9 is a plan view of an envelope blank withpa window patch or cover applied thereto. and,

Fig. 10 is a detail end view of a presser foot and its mode of attachment to the end of the gluing pad.

Mounted upon suitable standarcs 2 cured by cross bracing members 3 at the top and bottom thereof is a frame 4 suitably braced as by members 6 and upon this frame a head 7 and a table or platform 8 are mounted and secured fixedly and adjustably respectively, To the rear standards 2, hangers 9 are secured and in thesestandards a shaft 11 journaled and adapted to be driven from any source of power by means of pulley 12.

Also mounted upon the shaft 12 and secured thereto for rotation therewith are a crank disk 13, cams 14; and 15, a sprocket or pulley l7, and one portion of a one-way clutch mechanism, generally designated 18.

The head 7 supports and secures a forlv projecting extension head 19 formed outer end into a yoke 21, providing gs 22 and 23 in which the shaft 2-}, carrying a magazine 26, is journaled for I'QClPIOCfltlOD.

I Adjustably clamped upon the shaft 24 is a member 27 formed with oppositely extending pivot ends 28 and 29 to which a lever showing the gumming pad receiving ill 31 is pivotally mounted by means of a slot 32 therein. This lever 31 is fulcrumcd at 33 upon the extension head frame 19 and extends rearwardly into pivotal connection through a pivot pin 3 with a push rod 36 connected at its opposite end to a crank pin 2,? (Figs. 1 and 3 and 5) adjustably mounted in the crank disk 13 for varying the stroke of rod 36. The pivot pin 34: rides in a slot 38 in the lever 31 and also in a slot 39 formed in the push-rod 36 adapted to compensate for oscillatory movement of the lever 31 about its fulcrum 33 and for the purpose of providing a resilient connection whereby to compensate for varying distances of move-- merit of the-magazine 26 into contact with the work. For this latter purpose, the slot 39 is made relatively longer than the slot 38, a bracket All is secured to the push rod 36 and provided with a guide opening through which a guide rod 42 connected to the end of pivot bearing 34. slidably passes. A spring 43 interposed between the bracket 41 and the pivot pin 3% surrounds the guide rod 14-2 and tends to hold said pin and the end of lever 31 in a position about mioway of the slot 39 in push rod 36 as shown in Fig. 2 from which position the lever 31 and pin work against the spring in either direction. Thus, whenever the shaft 11 rotates one complete revolution, the push rod 36 is driven up and down, rockin lever 31 about its fulcrum, reciprocating the plunger 2land the n'ia-gazine 26 into and. out of contact with the stock.

Secured to or forming a part of a bracket 44 attached in any suitable manner as at 46 to the extension head frame 19 are a pair of guideways 47 having their upper portions disposed rcarwardly of the magazine 26 and their lower portions disposed substantially in the same vertical plane but on opposite sides of the path of travel of said magazine. These guides are preferably provided with slots el-S rising vertically adjacent the upper and lower ends of the guideways and running diagonally upward and downward, rearward and forward, respectively for a purpose to be later described. Since both sides of the machine are equipped similarly with this mecl'ianism, but one side will be described. Pivotally connected to each end of a shaft 49, passing across the machine through the slots .48 in the guides 47 is a plunger rod 51 pivotally connected at to a lever 58, fulcrumed at and secured to a rock shaft 5st in a pivot boss formed on the extension head frame 19.

Slidably pivoted at 56 in a slot formed in lever 53 is toggle arm 57 connected in turn through a lost motion connection 58 to a bell crank lever 59 suitably secured to a rock shaft 61 extending through and journaled in opposite sides of the frame l of the machine. A push rod 62 may be pivoted ad- 11 whereby it is retained and guided in its reciprocatory movements under influence of the cam 14, Figs. 4-, 5, and 6.) A spring or other retracting device 67 may be connected between the end of the bell crank lever and a portion of the frame to return said lever to its normal retracted position shown in Figs. 2, 4-,, and hen the cam 14- is rotated. with the shaft 11, push rod 62 is reciprocated, rec A the bell crank levers on both sides of the machine through the rock shaft 6i, forcing the toggle arm 5'4" and the love upwardly and downwardly to slide the shaft 4h) up and down between the limits of the slotted guideways 47.

Intermediate the guideways 4t? and pivoted upon the shaftl9 is a gunnning pad or die 68 which, preferably, has a recessed lower face to provide edges adapted to apply gum in a broken or unbroken line as shown at 69 about the opening 71 forn'icd in an envelope blank 72 (Fig. In order to press upon the blanks and hold them in position while the gununing pad is applying gum about the opening and to prevent their being raised with the guinniing pad upon its retraction therefrom by adhering to the face thereof, a pair of presser feet are supplied on 7" either end of the gumining pad and between the pad and the guideways Each of these prcsser feet is provided with a longitudinal, i. 0., vertical slot Tet. ada iitctl to loosely it ovcr the shaft 4t? and also loosely over the end of a shaft or pivot 76, which passes bctween the ends of the guuiming pad and through the link washers 71 which are fitted over the ends of the shafts 4h and 76 be tween the plunger rod 51 and the outer sides of the guideways 4:7 as well as between the guidcways and the outer sides the presser feet in the guideways during ij'eciprocatory movements of the gumi'ning mechanism. It will be apparent that when the plunger rods 51 descend, the pad and prcsser feet will travel vertically downward for a short d1s tance, then diagonally downward and forward and finally a n vertically downward until the presser feet and pad engage suc ccssivcly with the stock. The reverse movement is, of course, obvious. In order to keep the prcsscr feet urged downwardly into their lowermost position, as illustrated in Figs. 5, 6, and 10, a pin other member 75 is rigidly attached to the gumming pad 68 and a similar pin 80 attached rigidly to an upper portion of each presser foot and a tension spring is connected therebetween,

Thus, when the presser feet contact with he topmost blank of the pie of stock 72, the spring 85 is put under increasing tension as the pins 75 and 80 are spreao apart by the combined pressing and plunger actions. This provides a rapid return of the presser feet to their normal downward position, positively releasing any blank which may adhere to the gummed surface of the gumming pad.

It is desirable that the gumming pad or gumming stamp 68 carry only sutlicient gum on its gumming face to gum one piece of stock or one envelope blank at a time. Consequently, it is necessary that mechanism be provided tore-apply or re-gum its face after each stock stamping operation. For this purpose a gum applying roll 78, freely rotatable between pivots formed in a yoke arm 79 carried by av reciprocal rod 81 is intermittently driven back and forth across the face of the pad68 by means of an oscillating lever 82 pivoted at 83 to a bracket 84 secured to the head 7 and driven by means of a cam follower 86 traveling in a suitable track formed by cam 15 and connected to the rod 81 by a yoke link 87 guided through brackets 88 secured to the extension head 19.

A spring 85 is secured to the lower end of lever 82 for the purpose of positively urging the cam follower 86 into engagement with the cam 15 at all times, thus retracting the roller 78 after it has been urged forward by the cam action.

The rod 81 is also guided in a suitable bearing formed in a gum reservoir casing 89, adapted to receive a suitable gum, the top surface of which is indicated at 91.

A gum feed roll 92 is suitably journaled in the ends of the reservoir 89 for light frictional engagement with the gum applying roll 78 when retracted to its rearward position. and anidling roll 93 is also journaled in the reservoir 89 for continual contact with the gum feedroll to distribute and limit the amount of gum picked up thereby and applied to the roll 78. The roll 92 is arranged to be positively driven by means of chains 94 and 95 driven from the main shaft 11 through the intermediary of a high speed pulley 96. A belt or chain tightening idling pulley 97 may be attached to the head 7 by means of a bracket 98 in any suitable manner. Upon each rotation of the shaft 11, the gum applying roll 78 is carried forward into contact with the face of the pad 68, applying the desired film of gum thereon.

A suitable number of envelope blanks or other stock is arranged in an even pile upon the table 8 and their openings 71 positioned with respect to the guinming and patch or window cover applying mechanism by means of two. three, or more adjustable guides 99, 102, and 103, although the guide 103 may be a fixed guide, as shown, if desired.

Guide-ways 100 and 101 of any desired construction are provided in a sub-frame lOlconnected to the main frame for vertical sliding movement of corresponding guides on the table 8 therein and mechanism is provided for vertical adjustment of the table to compensatefor decrease in depth of the pile as the stock or envelope blanks, to

which the window or patch has been applied is gradually removed. This mechanism includes arack 104; suitably connected to the bottom of the table 8, a pinion 106 for engaging the rack, fixed on a shaft 107 iournaled in suitable bearings 108 and 109 release a m 118 affords a hand or finger pressure surface for release thereof. Mechanism is alsoprovided for vertical adjustment of the table 8 by means of the operators foot and includes a foot lever or foot pedal 119 secured upon a bracket 121 attached to a standard 2 and connected by means of a flexible strap 122 passing over a guide pulley 123 to a horizontally slidable bar 12 1- normally urged toward theleft of Fig. 1 by a spring (not shown) and to which is pivotally connected a spring pressed dog 126 adapted to engage behind successive teeth of the ratchetlkl which dog is in turn provided with a hand release portion 127. By pressure of the foot on the. pedal 119, the bar 124 is moved toward the right carrying the dog 126 also in this direction. rotating the ratchet and consequently the shaft 107 and pinion 106. and raising the rack 104 and table 8. The table may be dropped upon pressure of the hands of the operator upon the portions 108 and 127 of the two dogs.

' As heretofore mentioned, a one-way clutch 18 may be provided for connection of the pulley 12 to the shaft 11 and may be foot operated through the medium of levers 128. 129, 131,132 and foot treadle 133. Connection may be made between the lever 131 and the lever by means of a rock-shaft 134-, suitably iournaled in the frame of the machine, and springs 136 and 137 may be arranged to normally hold the clutch in open or released position, or vice versa, as desired.

The thin sheets of glazed paper or other material 138 to form the translucent or semitransparent windows for the envelopes are held in the magazine 26 which is preferably formed with straight walls substantially surrounding the edges of the window blanks except for the allowance of an open space across the front thereof, best shown in Fig.

- tracted.

1. The magazine may be open at the top as shown. in Fig. 7 and open at. the bottom, eX- ccpt for very light spring fingers 139, 141, and 142, arranged to prevent the blanks 108 from dropping out'under their own weight, but allowing the lowermost blank to be removed therefrom upon its contact with the glue or gum on the envelope blank when the reciprocal shaft 24 descends and is re- The blanks 138 are held within the receptacle or magazine 26 between the spring fingers 1.39, 141, 142 and the bottom face of a tlat plate 143 secured to the shaft 24, against the face of which plate the blanks are urged by the spring lingers. through the medium of springs 144 attached at one end to the magazine body as shown at 146, and at their other ends to L-shaped arms 147 secured in the top of plate 14?) in any suitable manner. The lowermost blanks 138 may slightly bulge downwardly and upon descent of the shaft 24 it will be seen that the lowermost face of the blank will be forced into contact with the gummed surface of the envelope blank 72 to, which it will adhere and be drawn from the magazine upon retraction thereof.

In o 'icration, the envelope blanks are positioned in the guides 101, 102, 103, which have been set in predetermined position and the operator throws in the clutch connecting the pulley 12 to the shaft 11 to drive the .i'i'lachine. The gumming fecd'rell is continuously driven, applying gum in a predetermined quantity to the surface of the gum applying roll which is carried forward, driven by its cam mechanism, and across the face of the gum apply ng pad 68 it is then automatically retracted and held in retracted position as shown in Figs. 4 and 5 for a subsequent cycle of the machine. During the gum applying step or operation of the gum applying roll 78, the n'1agazine-20 has window blank upon the previously gummed envelope blank but is retracted substantially simultaneously with the retraction of the gumming roll 78. Immediately after the roll 78 and magazine 26 have been retracted,

the gun'in'iing pad with its associated presser feet is moved downwardly, throijigh the medium of its cam and lever mechanism, along the guideways 47 into contact with the topmost envelope blank. The presser feet 73 first engage the sides of the blank under their own weight and action of springs 85, holding the blank firmly in position during the time when the gum applying pad 68 is contacting with the envelope blank'to apply gum thereto, and retracting. If the pile of envelope blanks is thick, the lost motion connection 58 between the toggle arm 57 and the bell crank lever absorbs the excess motion of the push rod to provide asubstantially resilient pressure of the pad and been carried downwardly to deposit a:

feet to upon the topmost blank and to prevent jamming of the parts.

The presser feet 73 are the last parts of the gumming mechanism to leave the blank and when this mechanism has been retracted to the position illustrated in Figs. 5 and 6, the shaft 24 carrying the magazine 26 de scends, applies a patch to the gummed por tion of the blank, and is immediately retracted through its mechanism. The patch applying mechanism also resiliently urged into contact with the topmost blank 72 ilirough the medium of slots 38 and 39 and spring mechanism 43, as will be readily understood. The envelope blank to which a patch has been applied is removed by the operator immediately after retraction of the mechanism 20, while from time to time, the foot treadle 119, or the handwheel 106 may be operated to raise the table 8 sutliciently to compensate for the stock or window blanks removed.

The machine illustrated is not only adaptable for applying window patches to window envelopes, but may be used in various connections of a similar or related nature, as desired. For instance, the patch applying mechan ism may be detached or rendered inoperal'ile and the gum applying pad used to apply gum or ink or any desired matter to any kind of blank, whether it be an envelope blank or not. Other portions of the machine may be used independently of their associateijl mcclianisms for various purposes, if and when desired. It will be apparent, therefore, that many changes and modifications in the use and operation as well as in the structure of the machine ilhistrated and described may be made without departing from the spirit of the invention or from the scope of the appended claims.

I claim:

1. In an envelope window applying ma chine, a magazine for holding and supplying window patches including, a receptacle open at the top and bottom, means at the bottom edge of said receptacle for releasably retaining said patches, a relatively fixed head within said receptacle, rigid members connected to the top of said head and having portions extending above the top of said receptacle, and springs connected between the extended portions of said members and the sides of said receptacle.

2. In an envelope window applying machine, a magazine for holding and supplying window patches including, a receptacle open at the'top and bottom, means at the bottom edge of said receptacle to releasably retain said patches, a relatively fixed head within said receptacle, rigid members connected to the top of said head and having arm portions extending in opposite direc-- tions outwardly of said receptacle above the top thereof, PIOJGCUODS on the sidesof-said receptacle below said outwardly extending portions of said members, and resilient means connecting said outwardly extending portions of said members and said projections whereby to draw said receptacle and patches contained therein continuously against said head.

3. In combination, means for supporting and positioning an envelope blank having a window opening therein in one position, and means including vertically reciprocable gumming means and vertically reciprocable patcliapplying means normally lying in juxtaposition to one another when inoperative and successively movable, over paths partially parallel and adjacent and partially coincident, to said position for applying gum about and a patch over said opening.

4. In combination, means for supporting an envelope blank having a window open ing in one position, a resiliently supported and vertically reciprocable gumming pad operative to gum said envelope about said opening while said envelope is at said position, and means including a vertically reciprocable magazine for applying a patch over said opening and to the gum thereabout while said envelope is at said position, said, gunnning pad and magazine normally lying in juxtaposition to one another when inoperative and successively movable, over paths puartially parallel and adjacent and partially coincident, to said position for applying gum about and a patch over said opening.

5. In combination,means for supporting and positioning a stack of superposed envelope blanks each having a window opening therein in one position with respect to the supporting means, means for adjusting said supporting means vertically, a vertically reciprocable gumming pad positioned over said supporting means adapted to be moved into contact with the uppermost envelope blank, and a vertically reciprocable patch applying means positioned over said supporting means for applying a patch to said gummed blank, said gumming pad and patch applying means being guided to move in parallel adjacent paths for certain portions of their reciprocatory movements and in substantially coincident paths for other portions of their movements.

6. In combination, means for supporting and positioning an envelope blank having a window opening therein, guideways rigidly positioned over and above said envelope supporting means, a vertically reciprocable gumming pad operative in said guideways for gumining the marginal edges of said opening and a vertically reciprocable patch applying means positioned over and above said envelope supporting and positioning means for applying patches to the gummed portion of said envelope.

ALBERT OLGAY. 

